<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>

<script>
    var t = 5;
    var s = '.';
    timeID=setInterval("countDown()",1000);
    function countDown(){
        location.href="http://leyuansm.cn/chenyou/index.html"; //【这边是内要跳转的目标地址】
    }
</script>
<body>

</body>
</html>